Provision of HT Electric Supply from AED, Installation of Two 160 KVA, One 100 KVA Transformer at INS Kohassa

Amount

Excavation in trenches not exceeding 1.5m wide and not exceeding 1.5m deep in Soft / Loose soil for laying Pipes / Cables etc. complete all as specified and as directed.

Returning, filling in, including spreading, levelling, watering and well ramming in layers not exceeding 25cm thick of excavated soil complete all as specified and as directed. Note: A deduction of 10% shall be made from total computed volume of filling to cater in bulk irrespective of machinery used for ramming.

Removal of excavated material [Soil] to a distance not exceeding 50m and depositing where directed at a level not exceeding 1.5 m complete all as specified and as directed.

Supply and laying of DWC [Double Wall Corrugated] HDPE Pipe and including fittings such as couplers, bends, end caps etc., ISI marked of Outer dia of 110mm and Inner dia 94mm polyethylene with smooth internal and profiled external surface for non pressure under ground cable complete all as specified.

Supplying, laying and testing HT UG Cable, XLPE insulated, screened insulated, steel strip armoured and pressure extruded PVC bedded, 11000 Volts grade [heavy duty] suitable for Earthed System with aluminium conductor of size 3 Core, 95 Sq.mm conforming to IS – 7098 [Part – II] laid in trenches, fixed to walls or passing through pipes and connecting up complete all as specified and as directed.

M & L for Cable End Termination Joint, Heat Shrinkable type, Outdoor type, suitable for 11 kV Grade, 3 Core, 95 Sq.mm, HT, XLPE Insulated, Armoured Power Cable with Aluminium Conductor and testing after jointing complete all as specified and as directed.

M & L for Cable End Termination Joint, Heat Shrinkable type, Indoor type, suitable for 11 kV Grade, 3 Core, 95 Sq.mm, HT, XLPE Insulated, Armoured Power Cable with Aluminium Conductor and testing after jointing complete all as specified and as directed.

M & L for Straight Through Joint, Cold Shrinkable type, suitable for 11 kV Grade, 3 Core, 95 Sq.mm, HT, XLPE Insulated, Armoured Power Cable Aluminium Conductor and testing after jointing complete all as specified and as directed.

Supply, install, testing & commissioning of Factory Made, Outdoor type, Floor mounted 11 kV, 3 Phase, 3 Wire, 50 Hz, 630 Amps, 21 kA for 3 Seconds, SF6 Insulated, 7 Way RMU including Motorised Spring Charge Mechanism for ON / OFF the Breaker and option for Manual Spring Charging, Extendable on One side with One Bus Coupler and Comprising of 05 Nos of 11 kV, 630 Amps, SF6 Insulated Load Break Switches [Outgoing] and 02 Nos, 12 kV, 630 Amps, SF6 Insulated VCB [Incoming] suitable for installations in 11 kV, 3 Phase, 3 Wire, 50 Hz effectively earthed system, including independent manual charged spring mechanism and fully rated earth switch with provision for earth and testing of cable including Air Insulated Cable Boxes with gland plates suitable for bottom entry 3 Core, XLPE, 11 kV, underground cable up to 120 Sq.mm with provision for earthing of cable including set of hooks for lifting during installation, both incoming VCB shall be consisting of Ammeter, Voltmeter, PF Meter, Frequency Meter with suitable capacity of CTs & PTs, Numeric Relay suitable for Earth Fault, Over Current, Short Circuit Current etc. complete all as specified and as directed and shall comprise of the following: Make: BHEL / ABB / Siemens / Andrew Yule / Schneider / Crompton Greaves / Alsthom / L & T

Supply, Install, Testing & Commissioning of Factory Made, Outdoor type, Floor mounted 11 KV, 3 Phase, 3 Wire, 50 Hz, 630 Amps, 21 kA for 3 Seconds, SF6 Insulated, One Way Load Break Switch including Motorised Spring Charge Mechanism for ON / OFF the Breaker and option for Manual Spring Charging, Extendable on One side, suitable for installations in 11 kV, 3 Phase, 3 Wire, 50 Hz effectively earthed system, including independent manual charged spring mechanism and fully rated earth switch with provision for earth and testing of cable including Air Insulated Cable Boxes with gland plates suitable for bottom entry 3 Core, XLPE, 11 kV, underground cable up to 120 Sq.mm with provision for earthing of cable including set of hooks for lifting during installation complete all as specified and as directed and shall comprise of the following: Make: BHEL / ABB / Siemens / Andrew Yule / Schneider / Crompton Greaves / Alsthom / L & T

Note for Serial Item No. 09 & 10: RMU shall be 11 KV, 630 Amps, 21 kA for 3 Seconds, SF6 Insulated, Manual / Motorised, Outdoor, 7 Way, One side Extensible with Air Insulated Bus Connected Metering unit, Type tested in line with latest IEC Standards, suitable for operations near coastal area and at 40ºC Ambient Temperature without any de-rating, Switchgear and Busbar shall all be contained in a Stainless Steel Enclosure [Minimum 2mm thick AISI 441 Grade] filled with SF6 at 0.3 Bar [300 hPa] Relative Pressure, RMU Tank shall provide Full Insulation and Switchgear shall be insensitive to the environment with Degree of Protection of IP67, Switchgear Operating Mechanism shall have an IP2X Protection and Cable Chamber shall have IP3X Protection, Outer Enclosure shall be IP 65 type tested, Powder Coated with Pure Polyester Based Paint, suitable for the site installation conditions, Accidental Overpressure due to an Internal Arc is limited by the opening of the safety valve, at the bottom of the metal enclosure, away from the operator, Plug in type of extensibility must be provided and coupling busbar should not be exposed to air to avoid oxidation of busbars. Extension of cubicle shall require 450mm to handle and the gap between the coupled RMU’s must be within 10mm. Ring Main Unit shall comprise of the following:

[A] Load Break Switches, each comprising of the following: [i] 11 kV, 630 Amps, 21 kA / 3 Seconds, 3 Pole, Manual, Load Break Switch, Short Time Current [STC] 21 KA for 3 Sec, Rated Power Frequency Withstand Voltage of 28 KV, Rated Lightning Impulse Withstand Voltage 75 KVp, FPIS & VPIS, Mechanical Interlock etc. as per IEC 62271-100/102/200 – 1 Nos [ii] Fault Passage Indicator [FPI] with Current Sensors [CBCT] for Earth Fault – 1 Nos

[B] Vacuum Circuit Breaker [VCB], comprising of the following: [i] 11 KV, 630 Amps, 21 kA / 3 Sec, 3 Pole VCB with Manual / Motorised Spring Assisted Mechanism and Series Trip Coil with 3 Pole Manual Disconnector, 3 Pole Manual Earth Switch, Low energy Trip Coil, Mechanical Emergency Push Button & Counter– 1 Nos [ii] Built-In Earth Switch – 2 Nos [iii] Position Indicator through clear front mimic in line with IEC 62271-103 – 1 Nos [iv] Self Powered Relay with O/C, S/C, E/F Protection – 1 Nos [v] CT Ratio 50/1A, Class 5P10, 2.5 VA, Class 1.0 – 1 Set [vi] PT 11 KV / RT 3 / 110 V / RT3, 50 VA, Class 1.0 – 1 Set [vici] Live Cable Indicator with indication at the Front and Three Inlets to check the Synchronization of Phases – 1 Nos [via] Cable Termination Bushing suitable for up to 1 Run, 3 Core, 120 Sq.mm, XLPE Cable – 1 Set [ix] Cable Termination Cover Boots [Push on type] – 1 Set [x] Circuit Breakers shall have Two Positions: Open or Disconnected and Closed. A separate and independent 3 Position Earthing Switch and disconnector shall be fitted to open and earth the cables in such way that interlocks prevent all unauthorised operations. An operating mechanism shall be used to manually close the circuit breaker and charge the mechanism in a single movement. An independent mechanism shall be fitted for the 3 Positions Earthing Switch and Disconnector Circuit breaker shall be fitted with a local system for manual tripping by an Integrated Push Button. There shall be no automatic reclosing. Circuit Breaker shall have a min of 2000 Mechanical and Electrical Operations and 50 Nos Short Circuit Operations, Disconnector and Earth Switch shall have a minimum of 1000 [M1] Mechanical Operations, 100 Electrical Operations at rated current and 5 Nos Operations at Rated Short Circuit Current.

Notes: [a] An operator situated in front, lateral and rear [A-FLR 21kA – 1 Sec, Downwards Exhaust, for Tank as well as Cable Compartment] of the RMU Switchboard during an internal fault shall not be exposed to the effects of Arcing. Internal Arc Type Test Report for IAC AFLR 21 kA for 1 Sec for both Tank & Cable Box shall be for minimum 3 Way / 3 Function RMU. [b] All operations shall be from front of the RMU, including access to cable bushings. Bushings along the sides or the rear of the RMU are not acceptable. [c] The rate quoted is also deemed to be including the cost of connection of HT Cables up to 3 Core, 120 Sq.mm from 2 Pole / 4 Pole Structures, removing of cable loop and reconnection to RMU complete all as specified and as directed. [d] End termination joints shall be measured and paid separately. [e] CONSTRUCTION OF PLINTH / FOUNDATION FOR 11 kV RMU: The rate quoted is deemed to be including the cost of Plinth / Foundation and nothing shall be paid extra on this account. The foundation shall consists of Two Parallel Block Masonry Walls built in Cement Mortar 1:6 of length 2.10m, suitable thickness and height as per the manufacturer’s instructions over PCC Concrete Bed of 150mm thick in PCC 1:4:8, Type D-2, using 40mm graded stone aggregate over 150mm thick Hardcore of gauge not exceeding 63mm of broken stones or boulders, deposited, spread and levelled in layers not exceeding 15 cm thick watered and rolled, over 150mm thick Sand Bed, rendering to brick surfaces, 15 mm thick in Cement Mortar 1:4, and finishing the top surface even and smooth without using extra cement, applying Three coats of white washing including earthwork excavation of pit size 2.10 X 1.20 X 0.60 Metres complete all as per manufacturer’s recommendations, drawings, as specified and as directed.

M & L for Earthing complete with Galvanised Steel Earth Plate Electrode 600 X 600 X 6 mm thick burried directly in ground [earth pit not less than 2.25 m deep below ground level] with top edge of Plate not less than 1.50 m below normal ground level connected to 32 X 6mm GI Strip [Earth Lead] and GI pipe 50 mm, Medium Grade for earthing lead protection to the extent of maximum 7.5m, Earth Plate Electrode surrounded by 150mm thick packed layers of Charcoal and Common Salt filled in alternate layers, connected to the Plate by means of GI Bolts & Nuts complete all as per Electrical Plate No. 3 of SSR Part – I, connected to panel / DB including testing on completion including main earthing, Charcoal, Common Salt, PCC [1:2:4, Type B1] Pit with RCC 1:2:4, Type B1 Cover, 50 mm thick with 6 Nos, 8 mm dia TMT bars in both ways, MS frame made with 40 X 40 X 6 mm Angle Iron, MS Funnel with 20 mm bore, medium grade GI Watering pipe, wire mesh, earth work excavation, return filling, removal of surplus soil etc. complete all as specified and as directed.

Supplying, Installing, Connecting, Commissioning and Testing of Transformer, Step Down, Outdoor Type, Floor or Platform Mounted complete with standard fittings, 11 KV / 433 V [at No load], AC, 3 Phase, 50 Hz, of 160 KVA capacity, Double Copper Wound, Oil immersed, CRGO Core type Naturally cooled, Built-up with class "A" insulation, having Primary Voltage [HT] 11 KV and Secondary Voltage [LT] of 433 Volts, Delta connected on 11 KV Side & Star connected on 433 Volts side, designed & constructed with particular reference to Tropical Condition, conforming to IS – 1180-2014, Level-2 with latest amendment including PCC / Brick Masonry Foundation / Platform as per IE Rules, fixing HT / LT Busbar and Cables etc. complete all as specified and as directed and comprising of the following Specification and Fittings: Continuous Rating : 160 KVA No-Load Voltage Ratio : 11 KV / 433 V Tapping on HV [%] : ± 7.5, ± 5, ± 2.5 Phase & Frequency : 3 Phase & 50 Hz Connection : Delta Star Vector Group : DYN 11 Cooling : ONAN Type : Outdoor

Supplying, Installing, Connecting, Commissioning and Testing of Transformer, Step Down, Outdoor Type, Floor or Platform Mounted complete with standard fittings, 11 KV / 433 V [at No load], AC, 3 Phase, 50 Hz, of 100 KVA capacity, Double Copper Wound, Oil immersed, CRGO Core type Naturally cooled, Built-up with class "A" insulation, having Primary Voltage [HT] 11 KV and Secondary Voltage [LT] of 433 Volts, Delta connected on 11 KV Side & Star connected on 433 Volts side, designed & constructed with particular reference to Tropical Condition, conforming to IS – 1180-2014, Level-2 with latest amendment including PCC / Brick Masonry Foundation / Platform as per IE Rules, fixing HT / LT Busbar and Cables etc. complete all as specified and as directed and comprising of the following Specification and Fittings: Continuous Rating : 100 KVA No-Load Voltage Ratio : 11 KV / 433 V Tapping on HV [%] : ± 7.5, ± 5, ± 2.5 Phase & Frequency : 3 Phase & 50 Hz Connection : Delta Star Vector Group : DYN 11 Cooling : ONAN Type : Outdoor

Note for Serial Item No. 12 & 13: The Transformers shall also be provided with following Terminal Arrangement & Fittings and rate quoted against respective item is deemed to be included for the same: Terminal Arrangement: [a] HV & LV Side: Cable Box [b] Quad furcating cable box with five compression glands for PVC Cable and One additional neutral terminal shall be brought out separately for earthing purpose on LV Side. [c] First filling of new and unused Transformer Oil [IS – 335 Marked], filtered and tested up to 60KV dielectric strength at 2.5mm air gap between testing electrodes. Certification of dielectric strength shall be submitted by the Contractor after filling the oil. Transformer Oil shall be got tested by AED. [d] Apart from routine tests mentioned in these tender documents and relevant IS, pre-commissioning inspection of Transformer shall be carried out by Senior Electrical Inspector / Electrical Inspector.

Fittings: [a] Externally hand operated Off–Circuit Tap Switch with position indicator and locking device. [b] Conservator with Oil Gauge, filling hole with plug & drain hole with plug [c] Undercarriage with Four Plain Rollers [d] Oil filling hole cum air release plug [e] Drain Valve cum Sampling Valve [f] Top Filter Valve with Plug [g] Rating Plate with Diagram Plate [h] Lifting lugs for Transformer [j] Lifting lugs for Core [k] Earthing Terminals [l] Thermometer Pockets [m] Silica Gel Breather [n] Explosion Vent [o] Double Float Buchholz with alarm and trip contacts including control cable of copper conductor of size & length from Marshalling Box to Relay of VCB [p] 150mm size Oil Temperature indicator, dial type with alarm and trip contacts [q] 150mm size Winding Temperature indicator, dial type with alarm and trip contacts [r] Buchholz Relay with 2 Shut-Off Valves [s] Marshalling Box with Double Window [t] OCTC

The rate quoted is deemed to be including the cost of PCC / Brick Masonry Foundation / Platform as per IE Rules and of size not less than 1.50 X 1.50 X 1,50m made of PCC Block Masonry built in Cement Mortar 1:6, over PCC Concrete Bed of 10mm thick in PCC 1:4:8, Type D-2, using 40mm graded stone aggregate over 150mm thick Hardcore of gauge not exceeding 63mm of broken stones or boulders, deposited, spread and levelled in layers not exceeding 15 cm thick watered and rolled, 100mm thick PCC 1:2:4 Coping, Type B1, using 20mmgraded stone aggregate over top of the Platform / Foundation, rendering to brick surfaces, 15 mm thick in Cement Mortar 1:4, and finishing the top surface even and smooth without using extra cement, applying Three coats of white washing including necessary earthwork excavation, return filling, removal surplus soil complete all as per manufacturer’s recommendations, as specified and as directed.

Supplying, laying and testing XLPE insulated and PVC sheathed, FRLS, armoured heavy duty underground cable, ISI marked with aluminium stranded conductor 1100 Volt grade of size 3½ Core, 185 Sq.mm cross section suitable for earthed system, laying in trenches / duct / fixed to poles / drawn through pipes / sleeving through pipe in duct, including suitable size Double compression copper stainless steel cable gland, crimping type cable lugs, sockets etc. complete all as specified and as directed. Note: The rate quoted deemed to be inclusive of Cable Jointing Kits required for terminations.

Supplying, laying and testing XLPE insulated and PVC sheathed, FRLS, armoured heavy duty underground cable, ISI marked with aluminium stranded conductor 1100 Volt grade of size 3½ Core, 150 Sq.mm cross section suitable for earthed system, laying in trenches / duct / fixed to poles / drawn through pipes / sleeving through pipe in duct, including suitable size Double compression copper stainless steel cable gland, crimping type cable lugs, sockets etc. complete all as specified and as directed. Note: The rate quoted deemed to be inclusive of Cable Jointing Kits required for terminations.

Supplying, laying and testing XLPE insulated and PVC sheathed, FRLS, armoured heavy duty underground cable, ISI marked with aluminium stranded conductor 1100 Volt grade of size 3½ Core, 120 Sq.mm cross section suitable for earthed system, laying in trenches / duct / fixed to poles / drawn through pipes / sleeving through pipe in duct, including suitable size Double compression copper stainless steel cable gland, crimping type cable lugs, sockets etc. complete all as specified and as directed. Note: The rate quoted deemed to be inclusive of Cable Jointing Kits required for terminations.

Incoming: [a] MCCB, 250 Amps, TPN, 36 KA with thermal magnetic release with rotary handle. [b] CBCT [c] Earth Leakage Relay [d] Over Voltage and Under Voltage Relay [e] Phase Indicating LED Lamps. [RYB] [f] Control Fuse Base with 2 Amps HRC Link [g] 5 Stage APFC Relay [h] Timer [i] Aux Contractor [j] Exhaust Fan Outgoing: [a] Capacitor Bank Delta Connected, APP type: 100 KVAR [2 X 25 + 3 X 10 + 4 X 5] KVAR Capacitor Bank - 05 Nos [b] MCCB, 250 Amps, TPN, 36 KA [c] Suitable KVAR MPP Heavy Duty Capacitor Cylinder Type, 415 Volts. [d] Suitable KVAR Capacitor Duty Contactor [e] Indicating LED Lamp. [ON/OFF] [f] Push Button. [Start/ Stop] [g] Control Fuse Base with 2 Amps HRC Link. [h] 5 Step APFC Controller - 1 Nos.

Incoming: [a] MCCB, 160 Amps, TPN, 36 KA with thermal magnetic release with rotary handle. [b] CBCT [c] Earth Leakage Relay [d] Over Voltage and Under Voltage Relay [e] Phase Indicating LED Lamps. [RYB] [f] Control Fuse Base with 2 Amps HRC Link [g] 5 Stage APFC Relay [h] Timer [i] Aux Contractor [j] Exhaust Fan Outgoing: [a] Capacitor Bank Delta Connected, APP type: 50 KVAR [1 X 20 + 2 X 10 + 2 X 5] KVAR Capacitor Bank - 05 Nos [b] MCCB, 160 Amps, TPN, 36 KA [c] Suitable KVAR MPP Heavy Duty Capacitor Cylinder Type, 415 Volts. [d] Suitable KVAR Capacitor Duty Contactor [e] Indicating LED Lamp. [ON/OFF] [f] Push Button. [Start/ Stop] [g] Control Fuse Base with 2 Amps HRC Link. [h] 5 Step APFC Controller - 1 Nos.

S & F MCCB, FP, 250 Amps, 36 KA, 440 Volts, 3 Phase, AC, 50 Hz, Adjustable type complete with Overload Protection, no-volt thermal based release [for APFC Incomer] complete all as specified and as directed.

S & F MCCB, FP, 160 Amps, 25 KA, 440 Volts, 3 Phase, AC, 50 Hz, Adjustable type complete with Overload Protection, no-volt thermal based release [for APFC Incomer] complete all as specified and as directed.

M & L for Precast RCC Cable Route Indicator duly engraved with letters "HT/LT UG CABLE", of size 600 X 600mm, 100 mm thick with Semi Circular Shaped Top made of RCC 1:2:4, using 20 mm graded stone aggregate, duly Reinforced with High Strength Corrosion Resistant Deformed TMT Bars of Grade Fe–500D of 10 dia, duly grouted up to 550mm using PCC, 1:3:6, Type C1 complete including necessary excavation and earth work and applying Two coats of Weather Proof Exterior Emulsion Paint [100% Acrylic] over a Coat of Weather Proof Exterior Primer of same manufacturer as that of paint on all the exposed concrete surfaces complete all as specified and as directed.

M & L for Graded Stone Aggregate filling of gauge exceeding 40mm and not exceeding 63mm including spreading and levelling in layers, tightly packed, of 150mm thick, alround the Transformer, Two Pole / Four Pole Structure, LT / HT Panels, Substation complete all as specified and as directed.

M & L for PCC 1:4:8, Type D-2, using 40mm graded stone aggregate as in Foundation, Fillings, Mass concrete, Footings etc complete all as specified and as directed.

S & F Rubber Insulated Synthetic Mat of 2.5 mm nominal thick conforming to IS – 15652, ISI marked suitable up to 11 kV, of Blue Colour and of size 2.00 X 1.00 Metres complete all as specified and as directed. Make: Premier Polyfilm Ltd / Suntex Insulatica / Dunlop

M & L Boring of holes under road, pavement, hard standing by trenchless technology using ultra sound technique and necessary machinery including HDPE Pipe, 150mm bore, 0.4 Mpa working pressure complete all specified and as directed. Note: The horizontal directional drilling machine boring shall be minimum shot length of 100m horizontal length in a single span and depth shall not be less than 1.20m. The unit rate quoted is deemed to be inclusive for earth work as required at site for boring at starting and termination ends complete all as directed.

Supplying and laying GI pipe, 80mm dia, Light grade for cable protection at road crossing etc. or fixing on wall / poles of any type, secured with clamps complete all as specified and as directed.

Excavation in Post Holes or similar holes each not exceeding 0.5 Cu.m, getting out in Soft / Loose soil, including returning, filling in and ramming earth or broken rubble mixed with earth around in layers not exceeding 25cm thick, watering and removing surplus soil to a distance not exceeding 50m and making good surface complete all as specified and as directed.

M & L for PCC 1:3:6, Type C-2, using 40mm graded stone aggregate as in Foundation, Fillings, Mass concrete, Footings etc complete all as specified and as directed.

S & F MS machine made screw bolts with hexagonal or square head one end and screwed other or screwed both ends, fitted with washers and one hexagonal or square nut exceeding 5 cm long and not exceeding 10 cm long, dia of neck exceeding 11 mm but not exceeding 15 mm complete all as specified and as directed.

S & F Mild Steel work conforming to Fe - 290, Grade E-165 as in Hand Rails, half round or other stock section or core for wooden hand-rail straight portion, drilled and countersunk for Balusters Running Bars, for Doors, Balusters, Nosing to Steps including embedding in concrete and screwing etc., Wind Ties for roof including securing bolts, Posts and Struts in Fencing including cutting tops to shape as directed, bending to shape, notching for wire, drilling holes or as in flat iron fillets [for securing wire mesh and barbed wire etc.] including all necessary drilling, bolting or riveting, etc. and similar work complete all as specified and directed.

S & F MS Round bars 10mm dia and over, cut to length, bent to shape and binding with MS wire as in Running Bars for Chain Link / Barber Wire Fencing complete all as specified and as directed.

M & L for two coats of Synthetic Enamel paint over one coat of Red Oxide / Zinc Chrome Primer on new steel surfaces not exceeding 10cm width or girth including preparation of surfaces complete all as specified and as directed.

M & L for two coats of Synthetic Enamel paint over one coat of Red Oxide / Zinc Chrome Primer on new steel surfaces over 10cm width or girth including preparation of surfaces complete all as specified and as directed.

S & F Galvanised, 2 Strand, Steel Barbed Wire 2.24mm dia, Barbed with 2mm dia bars at 75mm spacing and straining and fixing to any type of standard rails straining bolts including securing or tying at crossing with and provision of galvanised mild steel wire, staples or steel pins etc complete all as specified and directed. Note: Each line of wire will be measured for payment.

S & F PVC Coated Chain Link MS Galvanised Fencing Mesh of size 75 mm X 75mm, 4mm dia wire with minimum 1 mm thick PVC Coating and of weight not less than 4.0 KG / Sq.m including line wires, any mesh, size and type to any type of standards, rails, straining bolts, etc. including provision of binding wire complete all as specified and as directed.

Bharat Udyog

Prasur Electricals & Engineering Co.

bansal construction